Rank	Countries/Territories	Count	Percent
1	United States	305	35.1%
2	China	278	32%
3	Germany	100	11.5%
4	United Kingdom	41	4.7%
5	Japan	26	3%
6	Netherlands	16	1.8%
7	Canada	15	1.7%
8	Singapore	11	1.3%
9	Australia	8	0.9%
10	India	8	0.9%
11	France	5	0.6%
12	Israel	5	0.6%
13	Italy	5	0.6%
14	Poland	5	0.6%
15	Spain	4	0.5%
16	Taiwan	4	0.5%
17	Norway	4	0.5%
18	Korea, Republic of	4	0.5%
19	Hong Kong	3	0.3%
20	Egypt	3	0.3%
21	Switzerland	3	0.3%
22	Russia	3	0.3%
23	Greece	2	0.2%
24	Brazil	2	0.2%
25	Indonesia	2	0.2%
26	Mexico	2	0.2%
27	Iran, Islamic Republic of	1	0.1%
28	Cyprus	1	0.1%
29	Czech Republic	1	0.1%
30	New Zealand	1	0.1%
31	Turkey	1	0.1%